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2009 Confidence Interval Detail
174/Nacogdoches
174-908/Central Heights ISD

Category Summary

(1)
Category
(1)
Local
Value
(1)
Stratum
Ratio
(1)
State
Value
(2)
Sample
Size
(3)
Total
Parcels

Stratum
Variance
A 9,394,390 1.1731 8,008,175 7 253 .019637602
A 10,143,740 0.9800 10,350,755 7 142 .010679265
A 10,060,780 0.9339 10,772,866 8 87 .011940587
A 12,617,800 0.9524 13,248,425 9 58 .003186001
D3 43,877,060 0.9892 44,356,106 21 1,699 .017480353
G1 7,027,548 1.1631 6,042,084 7 50 .085014686
G1 7,535,880 1.0001 7,535,126 5 15 .007132117
G1 7,048,370 0.9847 7,157,886 4 7 .003186006
G1 6,371,700 1.0368 6,145,544 3 4 .012939595
Random Totals: 114,077,268   113,616,967 71 2,315  
Catg D1 Exception Values: 7,757,350   4,738,456      
Total Test Values (4): 121,834,618   118,355,423      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 5,917,771

Confidence Interval Values (5)

State Lower Limit: 112,437,652 (State Test Value minus Margin of Error Percent)
Local Test Value: 121,834,618 (Within Confidence Interval)
State Upper Limit: 124,273,194 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 116,621,655 (See ISD Summary Worksheet)

Sources:
(1) See Stratified Category Worksheet Reports PTS236, PTS430
(2) Number of parcels sampled by staff
(3) Total Category Parcels from Stratification Report, Appraisal Roll, or Self-report
(4) Includes any parcels in A, B, C, D3, F1, G1, G2, or L1 marked as exception properties
(5) Unstudied categories and sub-categories were not included in the Confidence Interval Values
(6) Includes local value of unstudied property categories and sub-categories

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